/*
 * Copyright [2020] [MaxKey of copyright http://www.maxkey.top]
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


package org.maxkey.web.tag;

import java.io.IOException;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import freemarker.core.Environment;
import freemarker.template.TemplateDirectiveBody;
import freemarker.template.TemplateDirectiveModel;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModel;

/**
 * 获取应用上下文标签
 * <@locale/>
 *
 * @author Crystal.Sea
 */

@FreemarkerTag("redirect")
public class RedirectTagDirective implements TemplateDirectiveModel {
    @Autowired
    private HttpServletRequest request;
    private HttpServletResponse response;

    private String basePath = null;

    @Override
    @SuppressWarnings("rawtypes")
    public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body)
            throws TemplateException, IOException {
        String location = params.get("url").toString();

        basePath = request.getScheme() + "://" + request.getServerName();
        int port = request.getServerPort();
        //Ignore 443 or 80 port
        if ((port == 443 && request.getScheme().equalsIgnoreCase("https"))
                || (port == 80 && request.getScheme().equalsIgnoreCase("http"))) {
        } else {
            basePath += ":" + port;
        }
        basePath += request.getContextPath() + "";

        response.sendRedirect(basePath + "/" + location);
    }

}
